[ https://issues.apache.org/jira/browse/HBASE-18122?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Duo Zhang updated HBASE-18122:
------------------------------
Status: Patch Available (was: Open)
> Scanner id should include ServerName of region server
> -----------------------------------------------------
>
> Key: HBASE-18122
> URL: https://issues.apache.org/jira/browse/HBASE-18122
> Project: HBase
> Issue Type: Bug
> Reporter: Phil Yang
> Assignee: Phil Yang
> Attachments: HBASE-18122.v01.patch
>
>
> Now the scanner id is a long number from 1 to max in a region server. Each new scanner
will have a scanner id.
> If a client has a scanner whose id is x, when the RS restart and the scanner id is also
incremented to x or a little larger, there will be a scanner id collision.
> So the scanner id should now be same during each time the RS restart. We can add the
start timestamp as the highest several bits in scanner id uint64.
> And because HBASE-18121 is not easy to fix and there are many clients with old version.
We can also encode server host:port into the scanner id.
> So we can use ServerName.
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